Yup, good guess, 12' Infinity 1230W, in two custom MDF boxes, powered by Phoenix Gold Octane-R 8.0:1.
Forgot the specs of the box, but it took me long enough to build it. Gotta get the cap sooner or later, cuz lights are dimming at 40% of headunit volume and 50% of bass level. But at this point you cant sit in the car.